Bird feeder



FIG. 1 is a top perspective view of a combined wind vane unit and bird feeder showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a right side elevation thereof, the left side being identical in appearance;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a bird feeder, as shown and described. 